Mexican designers show that Trump's proposed $21 billion wall would be nearly impossible to build

Nearly two months into his presidency, President Trump is chipping away at his promise to build a wall along the Mexico-US border. His administration put out an open call for designs in March, and will announce in June the 10 companies it wants to hire to build prototypes.

Over 700 companies expressed interest, though not all were expected to submit bids.

Though they didn't officially submit, Mexican architects from Estudio 3.14, a design firm based in Guadalajara, imagined a hot pink border that stretches 1,954 miles, called the "Prison-Wall."

The renderings are meant to show the impracticality of building the wall, designer Norberto Miranda told Business Insider. He says the border likely wouldn't foster positive relations with Mexico, and the country's rolling mountain ranges would make construction difficult.

As many others have pointed out, the wall would also be expensive, and Mexican President Enrique Peña Nieto said his country would never pay for it.

The US Department of Homeland Security says the total cost of the border wall project could be around $21.6 billion. Estudio 3.14 designed the renderings around this estimate.

Check them out below.

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The designers imagined a pink wall, since Trump has repeatedly said it should be "beautiful."

Agustin Avalos/Estudio 314

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The design was also inspired by the work of renowned Mexican architect Luis Barragán, who is famous for his blunt, stucco walls and use of bright colors.

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Stretching from the Pacific Coast to the Gulf of Mexico, the wall would separate the southwest US from northern Mexico.

Agustin Avalos/Estudio 314

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The wall would include a prison for immigrants, holding up to "11 million people who Trump plans to deport," Miranda says.

Agustin Avalos/Estudio 314

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Another part would feature a manufacturing plant, where the prisoners would work to maintain the wall.

Agustin Avalos/Estudio 314

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According to the design, Americans would enjoy a shopping mall that's built into the wall, too.

Agustin Avalos/Estudio 314

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The mountain ranges along the Mexico-US border would make the wall's construction nearly impossible and more costly, Miranda says. The areas without existing fences are the most dense and arid, so taking those physical challenges into consideration, it would take 16 years to build.

Agustin Avalos/Estudio 314

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The proposed divider is a "megalomaniac architectural proposal," he says.